Cleanup namespace usage in platform/graphics/[filters/* to skia/*] and platform/graphics/[B-D]*

Source/platform/graphics/skia/NativeImageSkia.cpp

Index: Source/platform/graphics/skia/NativeImageSkia.cpp
diff --git a/Source/platform/graphics/skia/NativeImageSkia.cpp b/Source/platform/graphics/skia/NativeImageSkia.cpp
index 86e1ea9f612e0af0014d32766893f8b6c6e47f09..6f36e512a421b0ea0b2c5f00869ccbfc919ccb45 100644
--- a/Source/platform/graphics/skia/NativeImageSkia.cpp
+++ b/Source/platform/graphics/skia/NativeImageSkia.cpp
@@ -159,7 +159,7 @@ void NativeImageSkia::draw(
     const SkRect& srcRect,
     const SkRect& destRect,
     CompositeOperator compositeOp,
-    blink::WebBlendMode blendMode) const
+    WebBlendMode blendMode) const
 {
     TRACE_EVENT0("skia", "NativeImageSkia::draw");
 
@@ -200,7 +200,7 @@ void NativeImageSkia::drawPattern(
     const FloatPoint& phase,
     CompositeOperator compositeOp,
     const FloatRect& destRect,
-    blink::WebBlendMode blendMode,
+    WebBlendMode blendMode,
     const IntSize& repeatSpacing) const
 {
     FloatRect normSrcRect = floatSrcRect;